What force (in newtons) is required to accelerate a body with a mass of 32 kilograms at a rate of 12 m/s2? if a body with a mass of 4 kg is moved by a force of 20 n, what is the rate of its acceleration? a car with a mass of 1,500 kg is traveling at a speed of 30 m/s. what force must be applied to stop the car in 3 seconds? if a suitcase has a mass of 20 kg, what is the force of gravity acting on it? on the moon, what would be the force of gravity acting on an object that has a mass of 7 kg? on earth, what is a child’s mass if the force of gravity on the child’s body is 100 n? plse me asap. i will mark you brainliest for correct answers

Question 1:

Mass (m) = 32 kg
Acceleration (a) = 12 m/s²

Force = mass × acceleration 
Force = 32 × 12 = 384 N


Question 2

Mass (m) = 4 kg
Force (F) = 20 N
Acceleration (a) = Force ÷ mass = 20 ÷ 4 = 5 m/s²


Question 3

Speed (v) = 30 m/s
Time (t) = 3 seconds
Mass (m) = 1500 kg

Use the formula, v = u + at, to find the acceleration, where 'u' is the initial velocity.
30 = 0 + 3a
30 = 3a
a = 30 ÷ 3
a = 10 m/s²

Force = mass × acceleration
Force = 1500 × 10 = 15000 N


Question 4

The force of gravity that acting on the 20kg suitcase is the weight
W = m × g, where g is the constant of gravity = 9.8 m/s²

W = 20 × 9.8 = 196 N


Question 5

The moon gravity constant is 1.6 m/s²
Force of gravity is given by W = m × g = 7 × 1.6 = 11.2 N


Question 6

The force of gravity is given by mass × earth constant gravity

The force of gravity = 100 N
The earth gravity constant  = 9.8 m/s²
The mass = 100 ÷ 9.8 = 10.2 kg

Based on the relationship between force, gravitational constant and mass:

Force = 384 NAcceleration (a) = 5 m/s²Force = 15000 NWeight = 196 NWeight, W = 11.2 NMass = 10.2 kgWhat is force?

Force is a pull or effect which tends to cause a change in the state or motion of an object.

Force = mass × acceleration

1. Mass (m) = 32 kg

Acceleration (a) = 12 m/s² 

Force = 32 × 12

Force = 384 N

What is the value of acceleration?

Mass (m) = 4 kg

Force (F) = 20 N

Acceleration (a) = Force/mass

Acceleration (a) = 20 ÷ 4

Acceleration (a) = 5 m/s²

What is the value of force?

The acceleration of the body of the object is found using the formula below:

v = u + at

where

u is the initial velocity

final velocity (v) = 30 m/s

time (t) = 3 seconds

mass (m) = 1500 kg

30 = 0 + 3a

30 = 3a

a = 30/3

a = 10 m/s²

Force = mass × acceleration

Force = 1500 × 10

Force = 15000 N

What is the force of gravity on the object?

The force of gravity that acting on the 20kg suitcase is the weight

Weight, W = mass × g

where g is the acceleration due to gravity

g = 9.8 m/s²

W = 20 × 9.8

Weight = 196 N

What is the force of gravity on the moon?

The moon gravitational constant is 1.6 m/s²

Force of gravity is given by W = m × g

Weight, W = 7 × 1.6

Weight, W = 11.2 N

What is the mass on earth?

The force of gravity is given by formula below:

Force of gravity = mass × earth's gravitational constant Mass = Force of gravity/earth's gravitational constant

The force of gravity = 100 N

The earth gravity constant = 9.8 m/s²

mass = 100 ÷ 9.8

Mass = 10.2 kg

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  sequence  is a continuous and distinctive band of  stars  that appears on plots of stellar  color  versus  brightness. these color-magnitude plots are known as  hertzsprung–russell diagramsafter their co-developers,  ejnar hertzsprungand  henry norris russell. stars on this band are known as  main-sequence stars  or  dwarf stars. these are the most numerous true stars in the universe, and include the earth's  sun.after condensation and ignition of a star, it generates  thermal energy  in its dense core region through  nuclear fusion  of  hydrogen  into  helium. during this stage of the star's lifetime, it is located on the main sequence at a position determined primarily by its mass, but also based upon its chemical composition and age. the cores of main-sequence stars are in  hydrostatic equilibrium, where outward thermal pressure from the hot core is balanced by the inward pressure of  gravitational collapse  from the overlying layers. the strong dependence of the rate of energy generation on temperature and pressure to sustain this balance. energy generated at the core makes its way to the surface and is radiated away at the  photosphere. the energy is carried by either  radiation  or  convection, with the latter occurring in regions with steeper temperature gradients, higher opacity or both.the main sequence is sometimes divided into upper and lower parts, based on the dominant process that a star uses to generate energy. stars below about 1.5 times the  mass of the sun  (1.5  m☉) primarily fuse hydrogen atoms together in a series of stages to form helium, a sequence called the  proton–proton chain. above this mass, in the upper main sequence, the nuclear fusion process mainly uses atoms of  carbon,  nitrogen  and  oxygen  as intermediaries in the  cno cycle  that produces helium from hydrogen atoms. main-sequence stars with more than two solar masses undergo convection in their core regions, which acts to stir up the newly created helium and maintain the proportion of fuel needed for fusion to occur. below this mass, stars have cores that are entirely radiative with convective zones near the surface. with decreasing stellar mass, the proportion of the star forming a convective envelope steadily increases. main-sequence stars below 0.4  m☉undergo convection throughout their mass. when core convection does not occur, a helium-rich core develops surrounded by an outer layer of hydrogen.in general, the more massive a star is, the shorter its lifespan on the main sequence. after the hydrogen fuel at the core has been consumed, the star  evolves  away from the main sequence on the hr diagram, into a  supergiant,  red giant, or directly to a  white dwarf.